Home / 236,157.12-325,890.34-128,729.25

Finding the Fourth Proportional to 236,157.12, 325,890.34 and 128,729.25

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Solution

The fourth proportional to 236,157.12, 325,890.34 and 128,729.25 is: 177,642.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,157.12 : 325,890.34 = 128,729.25 : x
  2. Step 2: Convert to fraction form
    236,157.12/325,890.34 = 128,729.25/x
  3. Step 3: Cross multiply
    236,157.12x = 325,890.34 × 128,729.25
  4. Step 4: Simplify right side
    236,157.12x = 41,951,618,728.62
  5. Step 5: Solve for x
    x = 41,951,618,728.62/236,157.12
  6. Step 6: Final answer
    x = 177,642.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.